The 2.7 GHz processor on the iMac 21.5 inch is not that impressive and does not leave much to write home about. Most of the modern iMacs and iPads coming into the market have intergrated the new TurboBoost technology into their processors; some can boost the 2.7 GHz to upto 3.6 GHz when under heavy usage. I believe the iMac 21.5" needs this even more. nice design though.

I agree. The tech inside of the iMac is quite impressive. I was really surprised to see a Texas Instruments Stellaris LM4FS1AH microcontroller and Analog Devices SSM33202 audio amplifer inside of the notebook. Wondering what function the TI microcontrolller plays in the iMac. The iFixit folks are awesome at teardowns: I have their app on my Android phone with all of the cool tips and tricks for repairing today's consumer electronic products. Very nice slides.

Here's another Apple teardown. Again, it's surprising how much technology is packed into such a slim form. Smartphone were a real breakthrough on tiny tech. The new iPad introduced yesterday is 40 percent slimmer than its predecessor. Amazing.

Industrial workplaces are governed by OSHA rules, but this isn’t to say that rules are always followed. While injuries happen on production floors for a variety of reasons, of the top 10 OSHA rules that are most often ignored in industrial settings, two directly involve machine design: lockout/tagout procedures (LO/TO) and machine guarding.

Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.